You would think youtube would be fine with public domain content too. But this is not necessarily the case. Besides copyright strikes, youtube will also take

You would think youtube would be fine with public domain content too. But this is not necessarily the case. Besides copyright strikes, youtube will also take videos down because they contain controversial content that advertisers don't like. They don't evaluate videos in the context of the video being old archived content representing old values from a different era. Particularly, I believe Jeff Quitney's channel (which was mostly old aerospace videos made by the US government, but was generally for whatever old film he got his hands on) got banned because some of the videos were old political propaganda which expressed views which are now verboten.